Apparatus for cutting up superphosphate masses.



- E'. GRIESEL.

APPARATUS PGB CUTTING UP SUPERPHOSPHATB MASSES.

- unzcynon FILED A1 1z.2e.19o1.

' Patented .22,1908.v

Bing-s512211.

I'. GRIESEL.

- 'AIJPABATUS fox GUTTING UP SUPEBPHOSPHATE MAssBs.

l 4 i J vAPPLICATION FILED APB. 26, 1907. 899,042, Y' l Y Patented Sept. 22,1908.

a ann-SHEET n.

l l l l I l l i P. GRIESBL. y

APPARATUS POB CUTTING UP SUPERPHOSPHTE MSSES. l

APLIOATIOH FILED APR. 26. 1907.

Patented Sept. 22, 1908.

FRITZ GRIEsEL, or soHELLMnL, NEAR DANZIG, GERMANY, AssieNoR rro oHsMlscHE i FBRIK AGTIEN-GESELLSCHAFT VORMALS `X`AsUNG DANAZLIG, or DANZIG, QERMANY.

`velop during the very act APPARATUS Fon enfermer UP sUPERPHosPH-ATE MAssEs.

Specification of Letters' Patent.

Patented sept. 2e, 1908.

l application mea April 2e', 1907. serial No. 370,465.

.an exact specification.

My invention deals with an apparatus by means of which super hos )hate masses kept in large reservoirs am taniks are cut up mechanically.

As is well known superphosphate is a product of a mixture of phosphate with an acid, which two components are first mechanically mixed in a special receptacle provided with means for a thorough stirrin of the mass, which mixture is then allowe( to low into a large reservoir or special rooms where the mass remains in a state of rest for a certain period of time during which time the reaction between the diii'erent com ovnents takes place and the mass slowly ecomes solid. The breaking up of such solidied superphosphate masses has up to date been accomplished by hand, and in spite of all preventive measures employedthese operations have proved to be a source of troubles and maladies for the laborers doing the work, inasmuch as it is impossible to prevent an inhaling of the dangerous fases which deozi cutting u the mass, that is just at a time when the la orer is compelled to be in the immediate neighborhood of the gassource. Another danger has develo ed from the habit of the workmen to um ercut the superphosphate mass in order to vhurry on the work-though this proceeding is strictly against the rudes-which bad practice easily results in burying of the laborer underneath the falling top-masses of the superphos hates. Naturally manual labor of such kin( can only be accomplished by establishing repeated periods of rest at certain intervals tor the laborer employed and consequently the number of men wanted will be rather lame in comparison with the amount of work c one. Thus the labor accomplished in this way is rather expensive.

Y Now I am aware of the fact that trials have been made to substitute mechanical power for the older method of employing hand labor. To this purpose an apparatus consisting of knives radially attached to a' rotating shaft was placed'within the stationary tank holding the solidiiied supcrphosphate mass, which device was slowly advanced in an axial direction within the tank'.

But arrangements of this type have shown Y serious drawbacks in applied practice, inasmuch as the whole device and the shaft upon which it was mounted had to be embedded into the mass and even if provisions were taken to keep those parts at leastjpartially l out of the mass; such dispositions could not be made tight enough to prevent penetrating of the mass. in a short time all the iron parts became more or less corroded and star-ting of such an embedded apparatus was always accompanied by a series of troubles, not to s eak of the const-ant repair and care require( Y The principal object of the present invention is to avoid these troubles experienced by employing an independent cutting device which is mounted separate and outside of the reservoir holding the superphosphate mass and whose center line of shaft forms one straight line with the extended center line of the cylindrical tank chosen as reservoir. This cutting device, the peculiar .construction of which will be fully described further on, principally consists of a number of properly dimensioncd and arranged knives mounted on a rotating sha-it,A which knives cut themselves into one of the bottom sides of the solidified mass by either moving the rotating knives in an axial direction towards said mass or vice versa by advancing the A description of the details and the method of working of the illustrated apparatus is.

given inthe following: l The mixing of the different components which afterwards constitute the superphosphat-e mass is done in a rcccptaclef of suilicient size and convenient form, provided with a `stirring device if The bottom of the receptacle has a disc iai-ging opening which during the mixing and stirring manipulationV is closed by a coverj'". A weight g attached .to the levcrf3 keeps said cover closed. As soon as the mass 1s considered thoroughly mixed, the coverfi is opened and the liquid mass will flow into the tank a positioned bclovv said receptaclef. This tank a, which for ractical reasons is formed cylindrical, is or this purpose provided with an oblong topopening dV through which the mass flows 1n and has. onits bottom a suitablv dimensioned slot c extending the whole length of the tank. Said slot is )rovided'with a suitable cover c which isc osed during the filling process and removed during the cutting mani uiation. The tvvo sides of the tank are a `o closed by detachable covers b and b to be removed as the mass is to be cut up. To the bottom of the tank a truck arrangementis fastened consisting of four sup orts a' each one carrying a truck Whee a?. These'vvheels run on parallel rails h. The Whole arrangement serves the pur ose of making the tank transportable an( capable of gradually advancmg in the direction towards the eut-ting device e. rI`he latter is mounted on a short shaft i., the extended center line of which coincides with the center line of the tank a, the shaft i is journaled at the suspended bearings lc and k and actuated bv the pulley l. In the construction selected the vvhole cutting device is arranged station-- ary and the tank containing the superphosphate mass transportably dis oscd. In the resent case this trans )ortability is achieved Ey providing threaded shafts m and m' one on each side of the tank a', the thread of each shaft meshing into threaded nuts, Which are in a suitable manner borne b arms ma', 'n.2 and n3, firmly attached to tie sides of the tank a. The threaded shafts m and 'm' are rotated by means of two sets of conical gearings o and o which in turn are actuated by the pulley Wheels p. By means of the selected arrangement the tank o. With its contents is gradually advanced towards the cutting device e, which is previously set in motion and the cutting et ges of the knives of the latter cut the gradually advancinel mass of superphosphate slowly and under Iiardly any app icat-ion of pressure into small pieces. The latter fall through the bottom slot c of the tank into suitable receptacles disposed belovv the slot vvhence the cut-up matter may be transported vto other cutting or breaking up devices Well known in the art, provided such a further dividing in still smaller fractions is desirable. It must be understood thatthe cutting manipulation of the device must be accomplished by applying a verysmall force pressure, because the application of press' re beyond a certain point causes the subst. ce cut to become greasy, a state which minst be avoided.

l The mechanical means for bringing the two separating parts viz'. the rotating knives of the cutting device and Lthe super hosphate block in the transportable tan' together, may be arranged in different ways Without departing from the principle of my invention. i

I can make the knife stationary and move the block as shown in the illustrations, or I may have the block ststionarily disposed and the cutting device advancing towards. it

or I may move both peres simultaneously placing same on a movable truck running on rails a great advantage or' practical importance is achieved. tanks after having been used can be readily transported to any suitable lace for either repair or ventilation; semnd y several tanks can, be filled from one receptacle one after another and the (parents of the filled tanks 4can be afterwards cnt up by a single cutting device. For tl 1r )ose the rails h must be extended to a s .abile place outside of the apparatus illustrated.

1. An improved apparatus for cutting up superphosphate mages comprising in combinatxon a tank holding the mass, a horlzontally disposed shaft jourvsled in supports outside and inde ende-nz o said tank, a cutting device Iixed y mou ed upon said shaft and means for gradually advancing the cutting deviceand the tank zmvards each other.

2.V .in improved apn..- superphosphate masses c. -iprising in combination a tank holt r.-.` the mass, a horizontally disposed shaft gcurasrlcd in supI orts outside and inde rendent of said tan the extended center ine of vvnich shaft coincides with the center ai the tank, a cutting device ixedly mounted upon said shaft and means for gradusiljr s vancing the cutting device and the tsr-.k wards each other.

3. An improved appsrsM n for cutting u superphosphate masses c: rising in comblnation a cylindrical olding the mass, said tank having a s top opening and a slot extending the xv .ength of the bottom, a removably att cover for said tank, side covers also ref" vably attached, a horizontally disposed t: journaled in In the. first place the is for cutting up sup tan coincides with the 4 stationary 5 upon said Yancing t rt-s outsideand ndepen the extended center line o stationary cutting device.

dentv of said center line of the tank, a. cutting device xedly mounted g shaft and means for gradually adhe transportzible tank towards the In witness whereof I have hereunto set my f which shaft ha-nd in the presence of two witnesses.

FRITZ GRIESEL..

Witnessesz I' Y v f FRANK S. N. DUNSBY, ERNST STRUMSKL 

